No one was injured in the blast, police say. Liege Mayor Willy Demeyer condemned the explosion as an "extremely violent act of antisemitism."
An explosion occured in front of a synagogue in the eastern Belgian city of Liege on Monday, police say.
No injuries were reported due to the blast but the explosion blew out the windows of the synagogue and those of the building across the street.
Police cordoned off the area as counterterrorism police conduct a probe.
The explosion occured in the early morning at around 04:00 a.m. (0300 GMT).
Liege Mayor Willy Demeyer said he and the city council "express their total condemnation of this extremely violent act of antisemitism, which is contrary to the Liege tradition of respect for others."
"There can be no question of importing external conflicts into our city," the mayor added, referring to the US-Israeli war with Iran.
Belgian Interior Minister Bernard Quintin said the explosion in front of the synagogue is "an abject antisemitic act that directly targeted Belgium's Jewish community."
